polyuria

Polyuria

polyuria

pathological secretion of excess amounts of urine; due to either the presence of sugar in the urine (in diabetes mellitus) or the absence of antidiuretic hormone from the posterior pituitary (in diabetes insipidus); seepolydipsia

pol·y·u·ri·a

(pol'ē-yūr'ē-ă)

Excessive excretion of urine resulting in profuse and frequent micturition.

[poly- + G. ouron, urine]

polyuria (pol´ēyoor´ēə),

n the passage of an abnormally increased volume of urine. It may result from increased intake of fluids, inadequate renal function, uncontrolled diabetes mellitus or diabetes insipidus, diuresis of edema fluid, or ascites.

polyuria

the formation and excretion of a large volume of urine. A history of polyuria in an animal is as unreliable as a history of polydipsia. A quantitative assurance that polydipsia is present suggests an error of renal tubular efficiency either as a result of toxic damage or an absence of the pituitary gland's antidiuretic hormone.

compensatory polyuria

see physiological polyuria (below).

pathological polyuria

that caused by a disease of the kidney or disorder elsewhere in the body, e.g. diabetes mellitus or liver failure.

pharmacological polyuria

is caused by administered fluids or medication, such as glucocorticoids or diuretics.

physiological polyuria

the result of increased fluid intake; called also compensatory polyuria (above).

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